10 states with the highest rates of mental illness

Using data collected by Mental Health America in 2021, this is a breakdown of the 10 states with the highest prevalence of any mental illness in the U.S.

According to the Substance Abuse and Mental Health Services Administration, "any mental illness" is defined as having a diagnosable mental, behavioral or emotional disorder, of any severity (mild, moderate or serious), excluding developmental or substance use disorders.

As of 2021, 19 percent of adults in the U.S., equivalent to over 47 million people, experienced a mental illness. Of those 47 million cases, approximately 11.25 million were considered severe cases.

The state with the highest prevalence of mental illness was Utah, with 25.25 percent of the adult population, approximately 550,000 people, experiencing a diagnosable mental illness. 

Below are the 10 states with the highest percentage of the population who experienced a mental illness in 2021.

Rank

State

Percentage of population

Number of people

1

Utah

25.25 percent

550,000

2

Idaho

24.46 percent

311,000

3

West Virginia

23.80 percent

337,000

4

Indiana

22.51 percent

1,129,000

5

Oregon

22.45 percent

731,000

6

Washington

22.23 percent

1,269,000

7

District of Columbia

22.21 percent

125,000

8

Kentucky

22.14 percent

746,000

9

Colorado

21.50 percent

924,000

10

Missouri

21.44 percent

993,000

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